OO5577
OO5577 (SkyWest Airlines) is a multi-stop service on 15 routes, busiest San Francisco to Kalispell. Of 523 departures recorded from October 2024 to July 2026, 76.7% left on time, according to the US BTS.
- On-time departures76.7%of 523 flights
- Average delay13.9 min
- July 202619▼ 38.7%vs July 2025
- Cancelled2.3%
- Legs flown under this number15
Recorded departures by month
All legs under this number combined; see the leg table.
The most recent periods19 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 23 | 4 | ▼ 82.6% |
| February | 22 | 10 | ▼ 54.5% |
| March | 30 | 27 | ▼ 10.0% |
| April | 30 | 28 | ▼ 6.7% |
| May | 29 | 11 | ▼ 62.1% |
| June | 27 | 30 | ▲ 11.1% |
| July | 31 | 19 | ▼ 38.7% |
| August | 28 | – | – |
| September | 30 | – | – |
| October | 31 | – | in progress |
| November | 29 | – | – |
| December | 20 | – | – |
| Year to date (Jan–Jul) | 192 | 129 | ▼ 32.8% |
according to the US BTS · October 2024 → July 2026
On-time departures by month
On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.
The most recent periods19 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 95.7% | 100.0% | ▲ 4.5% |
| February | 86.4% | 70.0% | ▼ 18.9% |
| March | 70.0% | 40.9% | ▼ 41.6% |
| April | 93.3% | 85.7% | ▼ 8.2% |
| May | 96.6% | 30.0% | ▼ 68.9% |
| June | 88.9% | 50.0% | ▼ 43.8% |
| July | 96.8% | 10.5% | ▼ 89.1% |
| August | 85.2% | – | – |
| September | 90.0% | – | – |
| October | 83.9% | – | in progress |
| November | 72.0% | – | – |
| December | 60.0% | – | – |
| Year-to-date average (Jan–Jul) | 89.6% | 55.3% | ▼ 38.3% |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
The most recent periods19 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | 0 | 0 | – |
| March | 0 | 5 | – |
| April | 0 | 0 | – |
| May | 0 | 1 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 1 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 4 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 0 | 6 |
according to the US BTS · October 2024 → July 2026
This is a historical record of departures already flown, not a forecast for your flight.
Several legs: the headline figure averages all of them. See the leg table.
Cancellation share
- Not cancelled 97.7% 511
- Cancelled 2.3% 12
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 31, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
7| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| SFO FCA San Francisco International Airport – Glacier Park International Airport | 1,358 | 14.2 min | 62.2% | 128 |
| ORD JAX Chicago O'Hare International Airport – Jacksonville International Airport | 1,393 | 1.4 min | 92.9% | 128 |
| MSO DEN Missoula Montana Airport – Denver International Airport | 1,092 | 4.0 min | 86.1% | 43 |
| MCI SFO Kansas City International Airport – San Francisco International Airport | 2,406 | 13.4 min | 74.3% | 36 |
| DEN COS Denver International Airport – City of Colorado Springs Municipal Airport | 117 | 8.2 min | 88.2% | 34 |
| GSO ORD Piedmont Triad International Airport – Chicago O'Hare International Airport | 948 | 12.8 min | 80.7% | 31 |
| TVC ORD Cherry Capital Airport – Chicago O'Hare International Airport | 360 | 56.4 min | 69.2% | 30 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 85.0% | 0 |
| November 2024 | 29 | 28 | 71.4% | 1 |
| December 2024 | 15 | 15 | 86.7% | 0 |
| January 2025 | 23 | 23 | 95.7% | 0 |
| February 2025 | 22 | 22 | 86.4% | 0 |
| March 2025 | 30 | 30 | 70.0% | 0 |
| April 2025 | 30 | 30 | 93.3% | 0 |
| May 2025 | 29 | 29 | 96.6% | 0 |
| June 2025 | 27 | 27 | 88.9% | 0 |
| July 2025 | 31 | 31 | 96.8% | 0 |
| August 2025 | 28 | 27 | 85.2% | 1 |
| September 2025 | 30 | 30 | 90.0% | 0 |
| October 2025 | 31 | 31 | 83.9% | 0 |
| November 2025 | 29 | 25 | 72.0% | 4 |
| December 2025 | 20 | 20 | 60.0% | 0 |
| January 2026 | 4 | 4 | 100.0% | 0 |
| February 2026 | 10 | 10 | 70.0% | 0 |
| March 2026 | 27 | 22 | 40.9% | 5 |
| April 2026 | 28 | 28 | 85.7% | 0 |
| May 2026 | 11 | 10 | 30.0% | 1 |
| June 2026 | 30 | 30 | 50.0% | 0 |
| July 2026 | 19 | 19 | 10.5% | 0 |